Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization
Multilayered core/shell particles were prepared by four-step deposition of cobalt ferrite layers and then deposition of external silica layer on the surface of silica core particles. The ferrite nanoparticles were obtained by co-precipitation of Co2+ and Fe3+ ions at pH=11 and pH=15, respectively. T...
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2021-09-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600203&tlng=en |
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| author | Milan P. Nikolić Katarina V. Pavlović Slobodanka Stanojević-Nikolić Aleksa Maričić Vladimir V. Srdić |
| author_facet | Milan P. Nikolić Katarina V. Pavlović Slobodanka Stanojević-Nikolić Aleksa Maričić Vladimir V. Srdić |
| author_sort | Milan P. Nikolić |
| collection | DOAJ |
| description | Multilayered core/shell particles were prepared by four-step deposition of cobalt ferrite layers and then deposition of external silica layer on the surface of silica core particles. The ferrite nanoparticles were obtained by co-precipitation of Co2+ and Fe3+ ions at pH=11 and pH=15, respectively. The agglomerated silica core/cobalt ferrite shell particles were obtained at extremely basic pH (pH=15), while at pH =11, monodispersed and non-aggregated core-shell particles were obtained. The poly(diallyldimethylammonium chloride)-functionalized silica core/ferrite shell particles were used as templates for deposition of mesoporous silica layers (obtained by neutralization of highly basic sodium silicate solution). The obtained porous multilayered core/shell particles were used as a host for covalent lipase immobilization inside the external silica layer. The initial activity of immobilized enzymes was about 13-fold lower than the native one, however, it showed good reusability and improved thermal stability compared to native ones. |
| first_indexed | 2024-12-20T09:30:38Z |
| format | Article |
| id | doaj.art-2b178cbad6264cc5acb66f7276ac2cb9 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-20T09:30:38Z |
| publishDate | 2021-09-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-2b178cbad6264cc5acb66f7276ac2cb92022-12-21T19:45:06ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392021-09-0124610.1590/1980-5373-mr-2021-0130Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase ImmobilizationMilan P. Nikolićhttps://orcid.org/0000-0003-4767-4419Katarina V. PavlovićSlobodanka Stanojević-Nikolićhttps://orcid.org/0000-0003-2914-9135Aleksa MaričićVladimir V. SrdićMultilayered core/shell particles were prepared by four-step deposition of cobalt ferrite layers and then deposition of external silica layer on the surface of silica core particles. The ferrite nanoparticles were obtained by co-precipitation of Co2+ and Fe3+ ions at pH=11 and pH=15, respectively. The agglomerated silica core/cobalt ferrite shell particles were obtained at extremely basic pH (pH=15), while at pH =11, monodispersed and non-aggregated core-shell particles were obtained. The poly(diallyldimethylammonium chloride)-functionalized silica core/ferrite shell particles were used as templates for deposition of mesoporous silica layers (obtained by neutralization of highly basic sodium silicate solution). The obtained porous multilayered core/shell particles were used as a host for covalent lipase immobilization inside the external silica layer. The initial activity of immobilized enzymes was about 13-fold lower than the native one, however, it showed good reusability and improved thermal stability compared to native ones.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600203&tlng=enCore-shellmultilayered shellmagnetic propertiesmesoporous silicaimmobilizationlipase |
| spellingShingle | Milan P. Nikolić Katarina V. Pavlović Slobodanka Stanojević-Nikolić Aleksa Maričić Vladimir V. Srdić Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization Materials Research Core-shell multilayered shell magnetic properties mesoporous silica immobilization lipase |
| title | Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization |
| title_full | Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization |
| title_fullStr | Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization |
| title_full_unstemmed | Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization |
| title_short | Synthesis and Characterization of Silica Core/Multilayered Cobalt Ferrite-Silica Shell Particles for Lipase Immobilization |
| title_sort | synthesis and characterization of silica core multilayered cobalt ferrite silica shell particles for lipase immobilization |
| topic | Core-shell multilayered shell magnetic properties mesoporous silica immobilization lipase |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600203&tlng=en |
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